I hear a lot of people saying they're sleepier since the change from Daylight Savings Time to Standard Time. Changing clocks is a lot more invasive on circadian rhythms than most people realize. It can affect health too. It takes the body somewhere around a month to adjust to the loss or gain of an hour--more for children, elderly, those with unusual schedules or already sick peopleFall Back Daylight Savings Time Change Makes Us More Tired